smith



C. S. SMITH.

SCREEN.

APPLICATION FILED NOV-11.1918- l,31 0,305. Patented July 15, 1919.,

2 SHEETSSHEET I.

172% 1260) 672422105 3 Smith C. S. SMITH.

SCREEN.

APPLICATION FILED NOV. 11. IBM].

Patented July 15, 1919.

2 SHEETS-SHEET 2.

CHARLES 5. SMITH, OF CHICAGO, IILLINQIS.

SCREEN.

Specification of Letters Eatent.

Patented July 15,

Application filed November 11, 1918. Serial No. 261,951.

To all whom it may concern Be it known that I, CHARLns S. SMITH, acitizen of the United States, residing at Chicago, in the county of Cookand State of lllinois, have invented certain new and useful Improvementsin Screens, of which the following is a specification. i

This invention relates to screens of the kind that is used adjacentwindows. More particularly, it is of the roller type; that is, it is ofthe type that is mounted upon a. spring roller so as to wind thereuponwhen not in use. The screenis so arranged with respect to a. window sashthat it automatically unrolls as the sash is opened, and rolls up againas the sash is closed.

Vith a View to the production of a screen of this kind, I have aimed todevice a structure that is simple, compact, and relatively inexpensive.Further, it has been an object of this invention that the screen shouldbe easily secured in operative position, and

just as easily removed therefrom. A connection between the screenandsash has, furthermore, been arranged such that it is difficult, ifnot impossible, to remove the screen while the window remains open, butwith complete closing of the window its removal may be readilyaccomplished.

In the description to follow, other objects, purposes, and uses of myinvention will become apparent. A structure in which is represented theimproved features of my screen is shown in detail in the accompanyingdrawings wherein- Figure 1 is an elevation of a window frame in which isa sliding sash shown partly open, and the present screen partlyunrolled; I I

Fig. 2 is a transverse section, enlarged, through the screen, togetherwith the ad acent parts of the window, the screen in thls view beingpartly unrolled as in Fig. 1;

Fig; 3 is a view SlmilfilftOFlg. 2, except that the screen is shown ascompletely rolled up, the sash in this view being completely closed; I II;

Fig. 4 is a horizontal section through the case taken on line 4-4 ofFig.3; and

Fig. 5 is a detail in elevation of the hook secured to the sash whichmakes connection with the screen.

It is desirable that the present screen should be adequately protected,andfor this "purpose I have provided an inclosmg case consisting of abottom 10, a back 11 usually at. right angles thereto, and a combinedfront and top piece 12 suitably rounded or curved as shown in Figs. 2and 3. Ends 13 are also provided in which are .mounted trunnions of aroller 1 which may be hollow or otherwise, and which is preferablyoperated against the tension of a coiled spring 15. Formed in the bottomof the case are key-hole slots 16, as many as necessary, through whichextend screws 17 secured to the sill of the window frame, to lock thecase in operative position adjacent thesash. As this form of connectionis well known, further description thereof is unnecessary.

Arranged uponthe roller and within the case is a screen 18 of anysuitable material, and by preference sufiiciently flexible to wind uponthe roller as many times as necessary. The free edge of the screen isreinforced with a strip 19 suitably fastened in place and bent over andupon itself in the form of a hook to provide a channel 20. In orderthatthe screen may unroll and roll up again upon the roller within thecase, I have provided a slit 21 lengthwise thereof in the top piece 12adjacent the back 11, and as the screen is'wound upon the roller, itsfree edge approaches the upper edge of the back- 11 until finally thereinforcing strip hooks thereon as shown in Fig. 8.

The construction of the screen having been described in detail, I willnow explain its cooperation with the sash. The means for accomplishingthis is exceedingly simple, consisting of one or more hooks 22 (a singlehook only has been illustrated as one will commonly suffice) secured tothe lower rail of the sash and so shaped as to present an upwardlyextending tongue which is offset or otherwise formed'to stand outslightly from the sash. When the window is closed,

as shown in Fig. 3, this tongue will lie behook 22 enters the channel 20formed in the strip 19. By preference a slit 23 is formed 1 in the bendof the strip such that the tongue of, the hook 22 may enter therein (seeFi 2) to correctly engage with the screen. t will be manifest, ofcourse, that the parts so formed connect the screen to the sash, so thatthe screen will be unwound and rise with the sash to occupy the space inthe window frame that is vacated by the sash as it is moved upwardly.Conversely, the screen is lowered and rewound within its protecting caseas the sash is lowered. It may be found expedient to arrange upon theinside stops which guide the sash'inits movements, small strips 24, asshown, which overlie the side edges of the screen when it is raised,thus closing what otherwise would be open spaces,.rather narrow to besure, butundesirable nevertheless,

I have shown and described the present screen. in relation to the lowersash of a window; it-is obvious, however, that it may be used inconnection with the upper sash as well by making the proper reversals inposition. Other uses may also be found for a.

screen constructed in accordance with my invention, and these, as wellas any modifications or changes in detail which embody my improvementsas defined in the appended claims, I desire to include within the scopeof this patent.

I claim:

1. In combination with a window sill and a sliding sash, a casingmounted on the sill, a spring roller rotatably mounted in the easing andcarrying a flexible screen, the front edge of the casing normallyresting in proximity to and extending parallel to the sash, a slit inthe top of the casing, adjacent the front edge thereof, through whichthe screen extends, a downwardly facing channeled strip carried by thefree edge of the screen and provided with a flange extending downwardlybetween the casing and sash and adapted, to engage and overhang the topof the front edge of the casing, when the screen is in its inoperativeposition, and means on the sliding sash for engaging said strip when thesash is raised, substantially as described;

2. In combination with a window sill and front edge of thecasing'normally resting in proximity to and extending parallel to thesash, a slit in the top of the casing, adjacent the front edge thereof,through which the screen extends, a downwardly facing channeled stripcarried by the free edge of the screen and provided with aflangeextending downwardly between the casing and sash and adapted to engageand overhang the top of the front edge of the casing, when the screen isin its inoperative position, and means on, thesliding sash for engagingsaid strip when the sash is raised, and for releasing said clip when thewindow is closed and the clip contacts the top ofthe casing,substantially as described.

3. In combination with a window sill'and a sliding'sash, a casingmounted'on the sill, a spring roller rotatably mounted in. the casingand carrying .a flexible screen, the front edge of the casing normallyresting in proximity to and extending parallel to the sash, a slit inthe top of the casing, adjacent the front edge thereof, through whichthe screen extends, a downwardly facing channeled strip carried by thefree edge of the screen and provided with-a flange extending downwardlybetween the casing and sash and adapted to engage and overhangdescribed.

CHARLES S. SMITH.

Witness:

EPHRAIM BANNING.

